Sans:
A.W.S.D. = throw around P2
I.J.K.L. = Place bone walls
zz = bone wave
Z = spawn bones
X = spawn gaster blaster
C = place platforms
V = place moving platforms
Space = change p2 to blue soul
1 = dodge P2 attacks
E = multiple bone elevator
2 = raise bones for longer time
0 = delete platforms (while touching them with mouse)
3 = Spawn Flappy Bones
4 = Spawn Bone Tunnel
5 = Spawn Bone trap
6 = Spawn Blue Bones
7 = Spawn Orange Bones
8 = Spawn Green Bones
9 = say "on days like these, kids like you" speech
g = "you feel your sins crawling on your back..."
p = "what, you think i'm just gonna stand there and take it?"
P2 controls:
Arrow keys = move around
M = attack sans (only works when touching FIGHT button)